S
M
T
W
T
F
S
30
75°
63°
31
86°
67°
1
88°
65°
2
80°
60°
3
76°
57°
4
76°
64°
5
81°
54°
6
80°
48°
7
80°
51°
8
76°
55°
9
80°
59°
10
71°
50°
11
78°
45°
12
82°
54°
13
66°
46°
14
69°
39°
15
75°
55°
16
N/A
17
69°
48°
18
65°
49°
19
61°
50°
20
69°
47°
21
60°
43°
22
65°
45°
23
66°
50°
24
67°
48°
25
68°
48°
26
71°
49°
27
67°
52°
28
69°
50°
29
65°
45°
30
64°
41°
1
67°
48°
2
58°
46°
3
59°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Westwood
Westwood's September 2026 forecast shows daily high temperatures ranging from 58° to 71°, with overnight lows between 41° and 52°. The average high for September is 65° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Westwood. See also: October | November | December.